A healthy way to approach those urges: make stuff. The pride of having your LO in things YOU have made is a pretty nice feeling.
There are tons of ways to make sweet little baby hats. Knit or crochet, sewn from old t-shirts or recycled sweaters... Stock up!
Baby blankets... yes please! Pick out a few yards of beautiful gender neutral flannel and have fun!
Shaped diaper liners are pretty easy, made from recycled flannel, or even from flat diapers (which are outrageously cheap, even new). Go check out your local cloth diaper store for ideas.
Sweet little baby pants! You can buy soft organic cotton jersey online to make them. Applique leaves, or add some gender neutral embroidery!
I just got this book, and it has some wonderful little projects in it: http://www.amazon.com/Handmade-Beginnings-Sewing-Projects-Welcome/dp/0470497815/ref=sr_1_1?ie=UTF8&qid=1293660192&sr=8-1
But yeah, we don't need anythink for LO2, but I still feel that tickle. Especially with the clothes!